/* Functions that provide the mechanism to parse a syscall XML file
and get its values.
- Copyright (C) 2009-2014 Free Software Foundation, Inc.
+ Copyright (C) 2009-2017 Free Software Foundation, Inc.
This file is part of GDB.
return NULL;
}
+struct syscall *
+get_syscalls_by_group (struct gdbarch *gdbarch, const char *group)
+{
+ syscall_warn_user ();
+ return NULL;
+}
+
+const char **
+get_syscall_group_names (struct gdbarch *gdbarch)
+{
+ syscall_warn_user ();
+ return NULL;
+}
+
#else /* ! HAVE_LIBEXPAT */
/* Structure which describes a syscall. */
} *syscall_desc_p;
DEF_VEC_P(syscall_desc_p);
+/* Structure of a syscall group. */
+typedef struct syscall_group_desc
+{
+ /* The group name. */
+
+ char *name;
+
+ /* The syscalls that are part of the group. */
+
+ VEC(syscall_desc_p) *syscalls;
+} *syscall_group_desc_p;
+DEF_VEC_P(syscall_group_desc_p);
+
/* Structure that represents syscalls information. */
struct syscalls_info
{
VEC(syscall_desc_p) *syscalls;
+ /* The syscall groups. */
+
+ VEC(syscall_group_desc_p) *groups;
+
/* Variable that will hold the last known data-directory. This is
useful to know whether we should re-read the XML info for the
target. */
xfree (sd->name);
}
+/* Free syscall_group_desc members but not the structure itself. */
+
+static void
+syscalls_info_free_syscall_group_desc (struct syscall_group_desc *sd)
+{
+ VEC_free (syscall_desc_p, sd->syscalls);
+ xfree (sd->name);
+}
+
static void
free_syscalls_info (void *arg)
{
- struct syscalls_info *syscalls_info = arg;
+ struct syscalls_info *syscalls_info = (struct syscalls_info *) arg;
struct syscall_desc *sysdesc;
+ struct syscall_group_desc *groupdesc;
int i;
xfree (syscalls_info->my_gdb_datadir);
VEC_free (syscall_desc_p, syscalls_info->syscalls);
}
+ if (syscalls_info->groups != NULL)
+ {
+ for (i = 0;
+ VEC_iterate (syscall_group_desc_p,
+ syscalls_info->groups, i, groupdesc);
+ i++)
+ syscalls_info_free_syscall_group_desc (groupdesc);
+
+ VEC_free (syscall_group_desc_p, syscalls_info->groups);
+ }
+
xfree (syscalls_info);
}
return make_cleanup (free_syscalls_info, syscalls_info);
}
+/* Create a new syscall group. Return pointer to the
+ syscall_group_desc structure that represents the new group. */
+
+static struct syscall_group_desc *
+syscall_group_create_syscall_group_desc (struct syscalls_info *syscalls_info,
+ const char *group)
+{
+ struct syscall_group_desc *groupdesc = XCNEW (struct syscall_group_desc);
+
+ groupdesc->name = xstrdup (group);
+
+ VEC_safe_push (syscall_group_desc_p, syscalls_info->groups, groupdesc);
+
+ return groupdesc;
+}
+
+/* Add a syscall to the group. If group doesn't exist, create it. */
+
+static void
+syscall_group_add_syscall (struct syscalls_info *syscalls_info,
+ struct syscall_desc *syscall,
+ const char *group)
+{
+ struct syscall_group_desc *groupdesc = NULL;
+ int i;
+
+ /* Search for an existing group. */
+ for (i = 0;
+ VEC_iterate (syscall_group_desc_p, syscalls_info->groups, i, groupdesc);
+ i++)
+ {
+ if (strcmp (groupdesc->name, group) == 0)
+ break;
+ }
+
+ if (groupdesc == NULL)
+ {
+ /* No group was found with this name. We must create a new
+ one. */
+ groupdesc = syscall_group_create_syscall_group_desc (syscalls_info,
+ group);
+ }
+
+ VEC_safe_push (syscall_desc_p, groupdesc->syscalls, syscall);
+}
+
static void
syscall_create_syscall_desc (struct syscalls_info *syscalls_info,
- const char *name, int number)
+ const char *name, int number,
+ char *groups)
{
struct syscall_desc *sysdesc = XCNEW (struct syscall_desc);
+ char *group;
sysdesc->name = xstrdup (name);
sysdesc->number = number;
VEC_safe_push (syscall_desc_p, syscalls_info->syscalls, sysdesc);
+
+ /* Add syscall to its groups. */
+ if (groups != NULL)
+ {
+ for (group = strtok (groups, ",");
+ group != NULL;
+ group = strtok (NULL, ","))
+ syscall_group_add_syscall (syscalls_info, sysdesc, group);
+ }
}
/* Handle the start of a <syscall> element. */
const struct gdb_xml_element *element,
void *user_data, VEC(gdb_xml_value_s) *attributes)
{
- struct syscall_parsing_data *data = user_data;
+ struct syscall_parsing_data *data = (struct syscall_parsing_data *) user_data;
struct gdb_xml_value *attrs = VEC_address (gdb_xml_value_s, attributes);
int len, i;
/* syscall info. */
char *name = NULL;
int number = 0;
+ char *groups = NULL;
len = VEC_length (gdb_xml_value_s, attributes);
for (i = 0; i < len; i++)
{
if (strcmp (attrs[i].name, "name") == 0)
- name = attrs[i].value;
+ name = (char *) attrs[i].value;
else if (strcmp (attrs[i].name, "number") == 0)
number = * (ULONGEST *) attrs[i].value;
+ else if (strcmp (attrs[i].name, "groups") == 0)
+ groups = (char *) attrs[i].value;
else
internal_error (__FILE__, __LINE__,
_("Unknown attribute name '%s'."), attrs[i].name);
}
gdb_assert (name);
- syscall_create_syscall_desc (data->syscalls_info, name, number);
+ syscall_create_syscall_desc (data->syscalls_info, name, number, groups);
}
static const struct gdb_xml_attribute syscall_attr[] = {
{ "number", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
{ "name", GDB_XML_AF_NONE, NULL, NULL },
+ { "groups", GDB_XML_AF_OPTIONAL, NULL, NULL },
{ NULL, GDB_XML_AF_NONE, NULL, NULL }
};
xml_init_syscalls_info (const char *filename)
{
char *full_file;
- char *dirname;
struct syscalls_info *syscalls_info;
struct cleanup *back_to;
back_to = make_cleanup (xfree, full_file);
- dirname = ldirname (filename);
- if (dirname != NULL)
- make_cleanup (xfree, dirname);
-
syscalls_info = syscall_parse_xml (full_file,
- xml_fetch_content_from_file, dirname);
+ xml_fetch_content_from_file,
+ (void *) ldirname (filename).c_str ());
do_cleanups (back_to);
return syscalls_info;
set_gdbarch_syscalls_info (gdbarch, syscalls_info);
}
+/* Search for a syscall group by its name. Return syscall_group_desc
+ structure for the group if found or NULL otherwise. */
+
+static struct syscall_group_desc *
+syscall_group_get_group_by_name (const struct syscalls_info *syscalls_info,
+ const char *group)
+{
+ struct syscall_group_desc *groupdesc;
+ int i;
+
+ if (syscalls_info == NULL)
+ return NULL;
+
+ if (group == NULL)
+ return NULL;
+
+ /* Search for existing group. */
+ for (i = 0;
+ VEC_iterate (syscall_group_desc_p, syscalls_info->groups, i, groupdesc);
+ i++)
+ {
+ if (strcmp (groupdesc->name, group) == 0)
+ return groupdesc;
+ }
+
+ return NULL;
+}
+
static int
xml_get_syscall_number (struct gdbarch *gdbarch,
const char *syscall_name)
return NULL;
nsyscalls = VEC_length (syscall_desc_p, syscalls_info->syscalls);
- names = xmalloc ((nsyscalls + 1) * sizeof (char *));
+ names = XNEWVEC (const char *, nsyscalls + 1);
for (i = 0;
VEC_iterate (syscall_desc_p, syscalls_info->syscalls, i, sysdesc);
return names;
}
+/* Iterate over the syscall_group_desc element to return a list of
+ syscalls that are part of the given group, terminated by an empty
+ element. If the syscall group doesn't exist, return NULL. */
+
+static struct syscall *
+xml_list_syscalls_by_group (struct gdbarch *gdbarch, const char *group)
+{
+ struct syscalls_info *syscalls_info = gdbarch_syscalls_info (gdbarch);
+ struct syscall_group_desc *groupdesc;
+ struct syscall_desc *sysdesc;
+ struct syscall *syscalls = NULL;
+ int nsyscalls;
+ int i;
+
+ if (syscalls_info == NULL)
+ return NULL;
+
+ groupdesc = syscall_group_get_group_by_name (syscalls_info, group);
+ if (groupdesc == NULL)
+ return NULL;
+
+ nsyscalls = VEC_length (syscall_desc_p, groupdesc->syscalls);
+ syscalls = (struct syscall*) xmalloc ((nsyscalls + 1)
+ * sizeof (struct syscall));
+
+ for (i = 0;
+ VEC_iterate (syscall_desc_p, groupdesc->syscalls, i, sysdesc);
+ i++)
+ {
+ syscalls[i].name = sysdesc->name;
+ syscalls[i].number = sysdesc->number;
+ }
+
+ /* Add final element marker. */
+ syscalls[i].name = NULL;
+ syscalls[i].number = 0;
+
+ return syscalls;
+}
+
+/* Return a NULL terminated list of syscall groups or an empty list, if
+ no syscall group is available. Return NULL, if there is no syscall
+ information available. */
+
+static const char **
+xml_list_of_groups (struct gdbarch *gdbarch)
+{
+ struct syscalls_info *syscalls_info = gdbarch_syscalls_info (gdbarch);
+ struct syscall_group_desc *groupdesc;
+ const char **names = NULL;
+ int i;
+ int ngroups;
+
+ if (syscalls_info == NULL)
+ return NULL;
+
+ ngroups = VEC_length (syscall_group_desc_p, syscalls_info->groups);
+ names = (const char**) xmalloc ((ngroups + 1) * sizeof (char *));
+
+ for (i = 0;
+ VEC_iterate (syscall_group_desc_p, syscalls_info->groups, i, groupdesc);
+ i++)
+ names[i] = groupdesc->name;
+
+ names[i] = NULL;
+
+ return names;
+}
+
void
set_xml_syscall_file_name (struct gdbarch *gdbarch, const char *name)
{
return xml_list_of_syscalls (gdbarch);
}
+/* See comment in xml-syscall.h. */
+
+struct syscall *
+get_syscalls_by_group (struct gdbarch *gdbarch, const char *group)
+{
+ init_syscalls_info (gdbarch);
+
+ return xml_list_syscalls_by_group (gdbarch, group);
+}
+
+/* See comment in xml-syscall.h. */
+
+const char **
+get_syscall_group_names (struct gdbarch *gdbarch)
+{
+ init_syscalls_info (gdbarch);
+
+ return xml_list_of_groups (gdbarch);
+}
+
#endif /* ! HAVE_LIBEXPAT */
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